Is it a problem for the developing baby if the mother doesn't smoke, but another member of the household smokes?

Highly unlikely. The only drug that carries through the semen is cocaine, which could effect the baby, even if the mother has not used cocaine.

Ongoing civil wars western roman empire finally collapsed476 c.e. romulus, the last of theroman  emperors in  the west, was overthrown by the germanic leader odoacer, who became the first barbarian to rule in rome. the order that the  roman empire  had brought towestern  europe for 1000 years was no more.

Truehope this : )